run bpftrace on android meet proble" cannot locate symbol "CrcGenerateTable" "

[micro2440]

Hi,

I pull this project and build bpftrace, but when I run bpftrace on android, but the error like below:

WARNING: linker: Warning: "/data/local/tmp/bpftools/lib/libc++_shared.so" unused DT entry: unknown processor-specific (type 0x70000001 arg 0x0) (ignoring) WARNING: linker: Warning: "/data/local/tmp/bpftools/lib/libc++_shared.so" unused DT entry: unknown processor-specific (type 0x70000001 arg 0x0) (ignoring) WARNING: linker: Warning: "/data/local/tmp/bpftools/lib/libc++_shared.so" unused DT entry: unknown processor-specific (type 0x70000001 arg 0x0) (ignoring) CANNOT LINK EXECUTABLE "bpftrace": cannot locate symbol "CrcGenerateTable" referenced by "/system/lib64/libunwindstack.so"...

So , Is any one can help me out, how to slove this problem.

[micro2440]

All,

After try many times , I already slove this problem and running on android.

[michalgr]

Hi,

Could you share more details ? What was the problem and how did you fix it ?

[micro2440]

Hi,

Issue1: CANNOT LINK EXECUTABLE "bpftrace": cannot locate symbol "CrcGenerateTable" referenced by "/system/lib64/libunwindstack.so. slove1: In my Android source code , I found the symbol "CrcGenerateTable" in liblzma.so, but in build lib "out/android/arm64/lib" I also found liblzma.so, but I have not found the symbol in out/android/arm64/lib/liblzma.so, so I thought maybe I can replace liblzma.so via android's liblzma.so, after that I can run bpftrace on android device.

Issue2: when I run the example : ./bpftrace -e 'kprobe:do_nanosleep { printf("PID %d sleeping...\n", pid); }' I found the error: ./bpftrace/include/clang_workarounds.h:14:10: fatal error: 'linux/types.h' file not found,

So after adb push many "*.h" to the device and run command:

k6873v1_64_phone:/data/local/tmp/bpftools/include # ls -l total 32

drwxrwxrwx 2 root root 4096 2022-04-22 07:15 asm drwxrwxrwx 2 root root 4096 2022-04-22 07:16 asm-generic drwxrwxrwx 2 root root 4096 2022-04-22 07:14 linux drwxrwxrwx 4 root root 4096 2022-04-22 06:58 uapi

./bpftrace -e 'kprobe:do_nanosleep { printf("PID %d sleeping...\n", pid); }' -I ./include/

After two steps, the bpftrace command can successful run on android device.

So as the above, that are details, if you any question, please contact me.

[wangzhangjun]

Hi,

Issue1: CANNOT LINK EXECUTABLE "bpftrace": cannot locate symbol "CrcGenerateTable" referenced by "/system/lib64/libunwindstack.so. slove1: In my Android source code , I found the symbol "CrcGenerateTable" in liblzma.so, but in build lib "out/android/arm64/lib" I also found liblzma.so, but I have not found the symbol in out/android/arm64/lib/liblzma.so, so I thought maybe I can replace liblzma.so via android's liblzma.so, after that I can run bpftrace on android device.

Issue2: when I run the example : ./bpftrace -e 'kprobe:do_nanosleep { printf("PID %d sleeping...\n", pid); }' I found the error: ./bpftrace/include/clang_workarounds.h:14:10: fatal error: 'linux/types.h' file not found,

So after adb push many "*.h" to the device and run command:

k6873v1_64_phone:/data/local/tmp/bpftools/include # ls -l total 32

drwxrwxrwx 2 root root 4096 2022-04-22 07:15 asm drwxrwxrwx 2 root root 4096 2022-04-22 07:16 asm-generic drwxrwxrwx 2 root root 4096 2022-04-22 07:14 linux drwxrwxrwx 4 root root 4096 2022-04-22 06:58 uapi

./bpftrace -e 'kprobe:do_nanosleep { printf("PID %d sleeping...\n", pid); }' -I ./include/

After two steps, the bpftrace command can successful run on android device.

So as the above, that are details, if you any question, please contact me.

hi , I also meet I found the error: ./bpftrace/include/clang_workarounds.h:14:10: fatal error: 'linux/types.h' file not found. Could you explain what these files(asm, asm-generic, linux , uapi) are? And Where to get? thank you !